refactor: financial reports to nestjs

temp/BalanceSheet/BalanceSheetExportInjectable.ts

@@ -0,0 +1,54 @@
+import { Injectable } from '@nestjs/common';
+import { BalanceSheetTableInjectable } from './BalanceSheetTableInjectable';
+import { BalanceSheetPdfInjectable } from './BalanceSheetPdfInjectable';
+import { IBalanceSheetQuery } from './BalanceSheet.types';
+import { TableSheet } from '../../common/TableSheet';
+
+@Injectable()
+export class BalanceSheetExportInjectable {
+  constructor(
+    private readonly balanceSheetTable: BalanceSheetTableInjectable,
+    private readonly balanceSheetPdf: BalanceSheetPdfInjectable,
+  ) {}
+
+  /**
+   * Retrieves the trial balance sheet in XLSX format.
+   * @param {ITrialBalanceSheetQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public async xlsx(query: IBalanceSheetQuery) {
+    const table = await this.balanceSheetTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToXLSX();
+
+    return tableSheet.convertToBuffer(tableCsv, 'xlsx');
+  }
+
+  /**
+   * Retrieves the trial balance sheet in CSV format.
+   * @param {ITrialBalanceSheetQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public async csv(
+    query: IBalanceSheetQuery,
+  ): Promise<string> {
+    const table = await this.balanceSheetTable.table(query);
+
+    const tableSheet = new TableSheet(table.table);
+    const tableCsv = tableSheet.convertToCSV();
+
+    return tableCsv;
+  }
+
+  /**
+   * Retrieves the balance sheet in pdf format.
+   * @param {IBalanceSheetQuery} query
+   * @returns {Promise<Buffer>}
+   */
+  public async pdf(
+    query: IBalanceSheetQuery,
+  ): Promise<Buffer> {
+    return this.balanceSheetPdf.pdf(query);
+  }
+}